MASA and MELI seem to be the same airframe. Assume Sycamore flew G-BALB which I'm sure I remember flying at Biggin's Battle of Britain display in September '76 - I can't ever recall seeing it even outside Interflight's hangar on my many subsequent visits. My 35 year old UK register says it was withdrawn from use in May '74 after CofA expiry but I suspect perhaps that should be May '84 - CAA cancelled it in November '84 and it was certainly flying after '74.